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Table 2 Classification of histological specimens with vasculitis from the San Juan de Dios Hospital, Bogotá, Colombia, 1953 – 1997, according to the scheme of Lie [27]

From: Are classification criteria for vasculitis useful in clinical practice? Observations and lessons from Colombia

Vasculitis diagnosis Number N = 304 Frequencies per 100,000 histological specimens Percentages
    groups of vasculitis subgroups of vasculitis
I. Primary vasculitis 142 74 46.7  
   A. Affecting large, medium and small sized blood vessels 1 0.6   0.7
1. Giant cell (Temporal) arteritis 1 0.6   
   B. Affecting predominantly medium and small-sized blood vessels 29 17.5   20.4
1. Polyarteritis nodosa 24 14.5   
2. Churg-Strauss syndrome 2 1.2   
3. Wegener's granulomatosis 3 1.8   
   C. Affecting predominantly small-sized blood vessels 74 44.7   52.1
1. Microscopic polyangiitis 1 0.6   
2. Henoch-Schönlein purpura 9 5.4   
3. Cutaneous leukocytoclastic angiitis 64 38.7   
   D. Miscellaneous conditions 38 23   26.8
1. Buerger's disease 38 23   
II. Secondary vasculitides 55 33.2 18.1  
1. Infection-related vasculitis 20 12.1   
2. Connective tissue disease vasculitis 33 20   
3. Hypocomplementemic urticarial vasculitis 1 0.6   
4. Vasculitis associated with neoplasia 1 0.6   
III. Unclassified vasculitis 107 64.6 35.2  
Total 304 183.6 100